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  2. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    Split systems are preferred and widely used worldwide except in North America. In North America, split systems are most often seen in residential applications, but they are gaining popularity in small commercial buildings. Split systems are used where ductwork is not feasible or where the space conditioning efficiency is of prime concern. [33]

  3. Mini-grid - Wikipedia

    en.wikipedia.org/wiki/Mini-grid

    A mini-grid is an aggregation of electrical loads and one or more energy sources operating as a single system providing electricity and possibly heat, isolated from a main power grid. A modern mini-grid may include renewable- and fossil fuel-based power generation, energy storage, and load control.

  4. Air conditioning - Wikipedia

    en.wikipedia.org/wiki/Air_conditioning

    The first mini-split system was sold in 1961 by Toshiba in Japan, and the first wall-mounted mini-split air conditioner was sold in 1968 in Japan by Mitsubishi Electric, where small home sizes motivated their development. The Mitsubishi model was the first air conditioner with a cross-flow fan.

  5. Pre-charge - Wikipedia

    en.wikipedia.org/wiki/Pre-charge

    Precharging a high voltage DC power distribution line can control the inrush current into capacitive components, reducing stress and supporting a long component life. The functional requirement of the high voltage pre-charge circuit is to minimize the peak current out from the power source by slowing down the dV / dT of the input power voltage ...

  6. Should you drink apple cider vinegar? A health expert ... - AOL

    www.aol.com/lifestyle/drink-apple-cider-vinegar...

    You've started 2025 right: You're exercising daily, meeting your step goals and eating healthy. Looking for something else to bump up your health game? Consider adding apple cider vinegar to your ...

  7. Split-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Split-phase_electric_power

    The line to neutral voltage is half the line-to-line voltage. Lighting and small appliances may be connected between a line wire and the neutral. Higher-power appliances, such as cooking equipment, space heating, water heaters, clothes dryers, air conditioners and electric vehicle charging equipment, are connected to the two line conductors.

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